Illumination and display apparatus

ABSTRACT

An illumination unit according to the present disclosure includes a plurality of first light-emission blocks, a plurality of second light-emission blocks, and a light-emission controller. The first light-emission blocks each include a plurality of first light-emitting devices arranged in a first direction. The second light-emission blocks are partially overlapped with the respective first light-emission blocks, and each include a plurality of second light-emitting devices arranged in a second direction different from the first direction. The light-emission controller performs light-emission control of the first light-emitting devices for each of the first light-emission blocks, and performs the light-emission control of the second light-emitting devices for each of the second light-emission blocks.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a continuation of U.S. patent applicationSer. No. 17/108,249, filed on Dec. 1, 2020, which is a continuation ofU.S. patent application Ser. No. 16/496,690, filed on Sep. 23, 2019,issued as U.S. Pat. No. 10,871,676, which is a national phase entryunder 35 U.S.C. § 371 of International Application No.PCT/JP2018/010750, filed on Mar. 19, 2018, which claims the benefit ofJapanese Priority Patent Application No. 2017-096227 filed with theJapan Patent Office on May 15, 2017, the disclosures of which are herebyincorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to an illumination unit and a displayapparatus.

BACKGROUND ART

A method has been known that increases a contrast in a display apparatusin which a backlight is used, such as a liquid crystal display. Onemethod is a partial driving control or a “local dimming” control inwhich a light-emission region of the backlight is divided into aplurality of partial light-emission blocks and a light-emission controlis performed for each of the partial light-emission blocks.

SUMMARY OF THE INVENTION

Upon performing a partial driving control of a backlight, drive circuitscorresponding to the number of partial light-emission blocks may benecessary.

It is desirable to provide an illumination unit and a display apparatusthat are able to simplify a circuit configuration directed to a partialdriving control.

An illumination unit according to an embodiment of the presentdisclosure includes: a plurality of first light-emission blocks eachincluding a plurality of first light-emitting devices arranged in afirst direction; a plurality of second light-emission blocks partiallyoverlapped with the respective first light-emission blocks, and eachincluding a plurality of second light-emitting devices arranged in asecond direction different from the first direction; and alight-emission controller that performs light-emission control of thefirst light-emitting devices for each of the first light-emissionblocks, and performs the light-emission control of the secondlight-emitting devices for each of the second light-emission blocks.

A display apparatus according to an embodiment of the present disclosureincludes: an illumination unit; and a display panel that displays animage on a basis of illumination light derived from the illuminationunit. The illumination unit includes a plurality of first light-emissionblocks each including a plurality of first light-emitting devicesarranged in a first direction, a plurality of second light-emissionblocks partially overlapped with the respective first light-emissionblocks, and each including a plurality of second light-emitting devicesarranged in a second direction different from the first direction, and alight-emission controller that performs light-emission control of thefirst light-emitting devices for each of the first light-emissionblocks, and performs the light-emission control of the secondlight-emitting devices for each of the second light-emission blocks.

In the illumination unit or the display apparatus according to theembodiment of the present disclosure, the first light-emission blocksand the second light-emission blocks may be overlapped with one anotherrespectively to form a plurality of partial light-emission blocks in thefirst direction and in the second direction.

The illumination unit or the display apparatus according to theembodiment of the present disclosure includes the plurality of firstlight-emission blocks and the plurality of second light-emission blockspartially overlapped with the respective first light-emission blocks.Hence, it is possible to simplify a circuit configuration directed to apartial driving control.

It is to be noted that an effect described herein is not necessarilylimiting and may be any of effects described in the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 describes an example of a method of dividing an image performedby a display apparatus according to a comparative example.

FIG. 2 describes an example of a method of dividing a light-emissionregion performed in a backlight according to the comparative example.

FIG. 3 schematically illustrates a configuration of an illumination unitaccording to the comparative example.

FIG. 4 is a circuit diagram illustrating an example of a circuitconfiguration of the illumination unit according to the comparativeexample.

FIG. 5 describes an example of a method of dividing an image in a firstdirection performed by a display apparatus according to a firstembodiment of the present disclosure.

FIG. 6 describes an example of a method of dividing the image in asecond direction performed by the display apparatus according to thefirst embodiment.

FIG. 7 describes an outline of a partial driving control performed by anillumination unit according to the first embodiment.

FIG. 8 schematically illustrates a configuration of the illuminationunit according to the first embodiment of the present disclosure.

FIG. 9 is a circuit diagram illustrating an example of a circuitconfiguration of the illumination unit according to the firstembodiment.

FIG. 10 is a circuit diagram illustrating an example of a circuitconfiguration of an illumination unit according to a modificationexample of the first embodiment.

FIG. 11 describes a first example of a method of dividing alight-emission region performed by an illumination unit according to asecond embodiment.

FIG. 12 describes an outline of a first example of a partial drivingcontrol performed by the illumination unit according to the secondembodiment.

FIG. 13 describes a second example of the method of dividing thelight-emission region performed by the illumination unit according tothe second embodiment.

FIG. 14 describes an outline of a second example of the partial drivingcontrol performed by the illumination unit according to the secondembodiment.

FIG. 15 describes a third example of the method of dividing thelight-emission region performed by the illumination unit according tothe second embodiment.

FIG. 16 describes an outline of a third example of the partial drivingcontrol performed by the illumination unit according to the secondembodiment.

FIG. 17 describes a fourth example of the method of dividing thelight-emission region performed by the illumination unit according tothe second embodiment.

FIG. 18 describes an outline of a fourth example of the partial drivingcontrol performed by the illumination unit according to the secondembodiment.

FIG. 19 schematically illustrates a configuration of an LED package tobe used for an illumination unit according to a third embodiment.

FIG. 20 is a circuit diagram illustrating an equivalent circuit of theLED package illustrated in FIG. 19 .

FIG. 21 schematically illustrates a configuration of the illuminationunit according to the third embodiment in which the LED packageillustrated in FIG. 19 is used.

FIG. 22 schematically illustrates a configuration of an illuminationunit according to a fourth embodiment.

FIG. 23 schematically illustrates a configuration of horizontal blocksin the illumination unit according to the fourth embodiment.

FIG. 24 schematically illustrates a configuration of vertical blocks inthe illumination unit according to the fourth embodiment.

FIG. 25 schematically describes partial light-emission blocks formed bythe illumination unit according to the fourth embodiment.

FIG. 26 schematically illustrates a configuration of a display apparatusaccording to a fifth embodiment.

FIG. 27 is an exploded perspective view of an example of an internalconfiguration of the display apparatus according to the fifthembodiment.

MODES FOR CARRYING OUT THE INVENTION

In the following, some embodiments of the present disclosure aredescribed in detail with reference to the accompanying drawings. It isto be noted that the description is given in the following order.

-   -   0. Comparative Example (FIGS. 1 to 4 )        -   0.1 Outline of Method of performing Partial Driving Control            according to Comparative Example        -   0.2 Outline of Illumination Unit according to Comparative            Example        -   0.3 Issue    -   1. First Embodiment (an illumination unit in which a circuit        configuration directed to a partial driving control is        simplified; FIGS. 5 to 10 )        -   1.1 Configuration and Operation        -   1.2 Effects    -   2. Second Embodiment (an illumination unit in which a circuit        configuration is further simplified; FIGS. 11 to 18 )    -   3. Third Embodiment (an illumination unit in which an LED        package is used; FIGS. 19 to 21 )    -   4. Fourth Embodiment (an illumination unit in which two columns        serve as one light-emission block; FIGS. 22 to 25 )    -   5. Fifth Embodiment (an example in which an illumination unit is        applied to a display apparatus; FIGS. 26 and 27 )    -   6. Other Embodiments

0. Comparative Example [0.1 Outline of Method of Performing PartialDriving Control According to Comparative Example]

FIG. 1 describes an example of a method of dividing an image performedby a display apparatus according to a comparative example. FIG. 2describes an example of a method of dividing a light-emission regionperformed in a backlight according to the comparative example.

One example of a method that increases a contrast in a display apparatusin which a backlight is used, such as a liquid crystal display, is amethod referred to as a “partial driving control”. Referring to FIG. 1 ,the partial driving control involves dividing an image as a whole into aplurality of partial blocks and controlling brightness of the backlightfor each of the partial blocks. FIG. 1 illustrates an example in whichthe image as a whole is divided into five partial blocks and fourpartial blocks in a first direction (a horizontal direction X) and asecond direction (a vertical direction Y), respectively, to therebydivide the image as a whole into a total of twenty partial blocks.

Referring by way of example to FIG. 2 , a light-emission region of thebacklight is divided into a plurality of partial light-emission blocksand a light-emission control is performed for each of the partiallight-emission blocks upon performing the partial driving control of thebacklight. The partial driving control increases light-emissionluminance for any partial light-emission block that corresponds to arelatively bright portion of the image, and decreases the light-emissionluminance for any partial light-emission block that corresponds to arelatively dark portion of the image. FIG. 2 illustrates an example inwhich the light-emission region is divided into five partiallight-emission blocks and four partial light-emission blocks in thehorizontal direction X and the vertical direction Y, respectively, tothereby divide the light-emission region into a total of twenty partiallight-emission blocks, such that the light-emission region is divided ina fashion corresponding to that of the example of FIG. 1 . It is to benoted that the right side of FIG. 2 illustrates an example of a relativevalue of the light-emission luminance of each of the partiallight-emission blocks; however, the relative values are for referenceonly and illustrated solely for description purpose.

[0.2 Outline of Illumination Unit According to Comparative Example]

FIG. 3 illustrates a schematic configuration of an illumination unit 100according to the comparative example, directed to achievement of thepartial driving control illustrated in FIG. 2 . FIG. 4 illustrates anexample of a circuit configuration of the illumination unit 100according to the comparative example.

The illumination unit 100 includes a plurality of partial light-emissionblocks 101. The partial light-emission blocks 101 are so provided thatfive partial light-emission blocks 101 and four partial light-emissionblocks 101 are disposed in the horizontal direction X and the verticaldirection Y, respectively. In other words, a total of twenty partiallight-emission blocks 101 are provided in order to achieve the partialdriving control illustrated in FIG. 2 .

The partial light-emission blocks 101 each include a light-emittingsection 30 and a control device 40.

Referring to FIG. 4 , the light-emitting section 30 includes at leastone light-emitting device 31. For example, the light-emitting device 31includes a light-emitting diode (LED).

The control device 40 may include, for example, a controllingfield-effect transistor (FET) 41 and a current-controlling resistor 42as illustrated in FIG. 4 .

The light-emitting section 30 provided in each of the partiallight-emission blocks 101 receives a supply of a voltage through abooster circuit 60.

The booster circuit 60 is a circuit that increases an input voltage Vinto the voltage necessary in the light-emitting section 30. The boostercircuit 60 includes an inductor 61, a diode 62, and a switching device63 such as a metal oxide semiconductor (MOS) FET, for example.

The controlling FET 41 provided in each of the partial light-emissionblocks 101 is controlled by a drive circuit 50 that includes anintegrated circuit (IC), for example.

It is to be noted that the control device 40 is provided in thelight-emitting section 30 of each of the partial light-emission blocks101. However, it is also possible to provide the control device 40 inthe drive circuit 50.

[0.3 Issue]

For the illumination unit 100 according to the comparative example, itis necessary to provide the control devices 40 and the drive circuits 50both corresponding to the number of partial light-emission blocks 101,in order to control the light-emission luminance of each of the partiallight-emission blocks 101 independently. For example, the controldevices 40 that are the same in number as the partial light-emissionblocks 101, i.e., five control devices 40 (the number of partiallight-emission blocks 101 in the horizontal direction X) x four controldevices 40 (the number of partial light-emission blocks 101 in thevertical direction Y)=twenty control devices 40, are necessary. Further,in a case where one drive circuit 50 has a control functioncorresponding to six channels, for example, five channels may be used byway of example per drive circuit 50 in order to drive the twenty partiallight-emission blocks 101, meaning that four drive circuits 50 arenecessary in this case (i.e., five channels x four drive circuits50=twenty partial light-emission blocks 101).

What is therefore desired is a development of a technique thatsimplifies a circuit configuration directed to the partial drivingcontrol.

1. First Embodiment

A description is given next of an illumination unit according to a firstembodiment of the present disclosure. It is to be noted that, in thefollowing, the same or equivalent elements as those of the illuminationunit according to the foregoing comparative example are denoted with thesame reference numerals, and description thereof will be omitted whereappropriate.

The first embodiment is described by referring to an example of anillumination unit that allows for the partial driving control performedby substantially twenty partial light-emission blocks 101 as with theillumination unit 100 according to the foregoing comparative example,while simplifying a circuit configuration. It is to be noted that thenumber of factors to be described below, including the number of partiallight-emission blocks 101 to be divided from the light-emission region,are exemplary and are not limited to that described below. In otherwords, the number of factors, such as the number of partiallight-emission blocks 101 to be divided from the light-emission region,may be greater or less than that of an example to be described below.The same is true for other embodiments to be described later.

[1.1 Configuration and Operation] (Outline of Partial Driving Control)

FIGS. 5 and 6 each describe an example of a method of dividing an imageperformed by a display apparatus according to the first embodiment ofthe present disclosure.

In the display apparatus according to the present embodiment, an imageas a whole is divided in two different directions, i.e., in the firstdirection (the horizontal direction X) and in the second direction (thevertical direction Y). In other words, the image as a whole is dividedinto four horizontal image blocks in which the image as a whole ispartitioned in the horizontal direction X as illustrated in FIG. 5 , andinto five vertical image blocks in which the image as a whole ispartitioned in the vertical direction Y as illustrated in FIG. 6 .

FIG. 7 describes an outline of the partial driving control performed byan illumination unit 1 according to the present embodiment. FIG. 8illustrates a schematic configuration of the illumination unit 1according to the present embodiment.

Referring to the upper side of FIG. 7 , the light-emission region isdivided into two kinds of light-emission blocks, i.e., a plurality ofhorizontal blocks (first light-emission blocks) 10 and a plurality ofvertical blocks (second light-emission blocks) 20 in the illuminationunit 1 according to the present embodiment. Further, the light-emissioncontrol is performed for each of the horizontal blocks 10 and for eachof the vertical blocks 20.

In the illumination unit 1 according to the present embodiment, thelight-emission blocks to be actually subjected to the light-emissioncontrol are only nine light-emission blocks, i.e. four horizontal blocks10+five vertical blocks 20, as illustrated on the upper side of FIG. 7 .However, as illustrated on the lower side of FIG. 7 , the horizontalblocks 10 and the vertical blocks 20 partially overlap with one anotherrespectively to form a total of twenty partial light-emission blocks 101consequently as with the foregoing comparative example. Thus, luminanceof each of the partial light-emission blocks 101 is the sum of luminanceof the corresponding horizontal block 10 and luminance of thecorresponding vertical block 20 which are overlapped with each other. Itis to be noted that FIG. 7 illustrates an example of a relative value ofthe light-emission luminance of each of the blocks; however, therelative values are for reference only and illustrated solely fordescription purpose.

(Outline of Illumination Unit)

Referring to FIG. 8 , the illumination unit 1 includes a plurality oflight-emitting devices (first light-emitting devices) 31 arranged in thehorizontal direction X in each of the horizontal blocks 10, in order toachieve the partial driving control illustrated in FIG. 7 . For example,the light-emitting devices 31 each may be an LED chip. Further, each ofthe horizontal blocks 10 includes a first substrate 33 that extends inthe horizontal direction X. The plurality of light-emitting devices 31is provided on the first substrate 33. The mutually-adjacentlight-emitting devices 31 provided on the corresponding first substrate33 are coupled to one another.

The illumination unit 1 also includes a plurality of light-emittingdevices (second light-emitting devices) 32 arranged in the verticaldirection Y in each of the vertical blocks 20. For example, thelight-emitting devices 32 each may be an LED chip. Further, each of thevertical blocks 20 includes a second substrate 34 that extends in thevertical direction Y. The plurality of light-emitting devices 32 isprovided on the second substrate 34. The mutually-adjacentlight-emitting devices 32 provided on the corresponding second substrate34 are coupled to one another.

The illumination unit 1 is so configured that at least onelight-emitting device 31 and at least one light-emitting device 32 aredisposed in each of the partial light-emission blocks 101 formed by thepartial overlapping of the horizontal blocks 10 with the respectivevertical blocks 20. The light-emitting device 31 and the light-emittingdevice 32 disposed in one partial light-emission block 101 form onelight-emitting section 30. Thus, the luminance of each of the partiallight-emission blocks 101 is the sum of luminance of the light-emittingdevice 31 and luminance of the light-emitting device 32 which areprovided in the corresponding partial light-emission block 101.

(Circuit Configuration)

FIG. 9 illustrates an example of a circuit configuration of theillumination unit 1.

In the illumination unit 1 according to the present embodiment, thelight-emission blocks to be actually subjected to the light-emissioncontrol are the four horizontal blocks 10 and the five vertical blocks20 as described above. The control device 40 and the drive circuit 50may be each an example of a “light-emission controller” according to thepresent disclosure. The control device 40 and the drive circuit 50perform the light-emission control on a horizontal block 10 basis and ona vertical block 20 basis. In a case where the illumination unit 1 isapplied to the display apparatus, the drive circuit 50 so variablycontrols the luminance of the light-emitting section 30 that thelight-emitting section 30 emits light at the luminance that is based onan image of a portion corresponding to the partial light-emission block101 formed by the overlapping of the corresponding horizontal block 10and the corresponding vertical block 20.

Accordingly, providing the control device 40 for each of the horizontalblocks 10 and each of the vertical blocks 20 suffices. In other words,the number of control devices 40 necessary is only nine, namely, fivecontrol devices 40 in the horizontal direction X+four control devices 40in the vertical direction Y suffice.

Similarly, the number of channels of the drive circuit 50 necessary isonly nine in the illumination unit 1 according to the present embodiment(namely, four channels for the horizontal blocks 10+five channels forthe vertical blocks 20). In a case where one drive circuit 50 has acontrol function corresponding to six channels, for example, providingtwo drive circuits 50 suffices in order to drive the four horizontalblocks 10 and the five vertical blocks 20.

FIG. 10 illustrates an example of a circuit configuration of theillumination unit 1 according to a modification example.

An example of the circuit configuration illustrated in FIG. 9 has aconfiguration in which the booster circuit 60 is shared by thehorizontal blocks 10 and the vertical blocks 20. However, there may be asituation where it is necessary to make a voltage for the horizontalblocks 10 and a voltage for the vertical blocks 20 different from eachother in a case where the number of light-emitting devices 31 providedfor the horizontal blocks 10 and the number of light-emitting devices 32provided for the vertical blocks 20 are different from each other. Insuch a case, a booster circuit 60A directed to the horizontal blocks 10and a booster circuit 60B directed to the vertical blocks 20 may beprovided separately as illustrated in FIG. 10 .

It is to be noted that the control device 40 and the drive circuit 50are provided separately in examples illustrated in FIGS. 9 and 10 ;however, the control device 40 may be provided in the drive circuit 50.

Any configuration and operation other than those described above may besubstantially similar to those of the illumination unit according to theforegoing comparative example.

[1.2 Effects]

According to the present embodiment, the plurality of horizontal blocks10 and the plurality of vertical blocks 20 partially overlapped with therespective horizontal blocks 10 are provided as described above. Thisconfiguration allows the horizontal blocks 10 and the vertical blocks 20to be overlapped with one another respectively to form the plurality ofpartial light-emission blocks 101 in the horizontal direction X and inthe vertical direction Y. Hence, it is possible to simplify a circuitconfiguration directed to the partial driving control.

It is to be noted that the effects described herein are illustrative andnon-limiting, and may include effects other than those described above.The same is true for effects that are achieved by other embodimentsdescribed hereinafter.

2. Second Embodiment

A description is given next of an illumination unit according to asecond embodiment of the present disclosure. It is to be noted that thesame or equivalent elements as those of the illumination unit accordingto the foregoing first embodiment are denoted with the same referencenumerals, and description thereof will be omitted where appropriate.

In the foregoing first embodiment, the light-emission luminance of eachof the light-emission blocks including the horizontal blocks 10 and thevertical blocks 20 is variably controlled. Alternatively, thelight-emission control may be so performed that the light-emissionluminance of some of the light-emission blocks becomes constant. Forexample, the drive circuit 50 may so perform the light-emission controlthat the light-emission luminance of the light-emitting devices 31belonging to some of the horizontal blocks 10 and the light-emissionluminance of the light-emitting devices 32 belonging to some of thevertical blocks 20 to be constant. In this case, the drive circuit 50variably controls the light-emission luminance of the light-emittingdevices 31 belonging to the horizontal blocks 10 other than the some ofthe horizontal blocks 10, and variably controls the light-emissionluminance of the light-emitting devices 32 belonging to the verticalblocks 20 other than the some of the vertical blocks 20. This furthersimplifies a circuit configuration of the drive circuit 50.

First Example

FIG. 11 illustrates a first example of a method of dividing thelight-emission region performed by the illumination unit according tothe second embodiment of the present disclosure. FIG. 12 illustrates anoutline of a first example of the partial driving control performed bythe illumination unit according to the present embodiment.

Referring by way of example to the left side of FIG. 11 , thelight-emission control may be so performed that the luminance of atleast the light-emission blocks, which serve as luminance-fixedhorizontal blocks 11, located at both ends in the vertical direction Yout of the horizontal blocks 10 according to the foregoing firstembodiment becomes constant continuously. In this case, thelight-emission blocks other than the luminance-fixed horizontal blocks11 out of the horizontal blocks 10 serve as luminance-variablehorizontal blocks 12 to variably control the light-emission luminance ofthe luminance-variable horizontal blocks 12.

Further, as illustrated by way of example on the right side of FIG. 11 ,at least the light-emission blocks located at both ends in thehorizontal direction X out of the vertical blocks 20 according to theforegoing first embodiment serve as luminance-fixed vertical blocks 21.In this case, the light-emission blocks other than the luminance-fixedvertical blocks 21 out of the vertical blocks 20 serve asluminance-variable vertical blocks 22 to variably control thelight-emission luminance of the luminance-variable vertical blocks 22.

A total of twenty partial light-emission blocks are formed as with theforegoing first embodiment by combining the light-emission blocksillustrated in FIG. 11 . The luminance obtained as a result of thecombining in each of the partial light-emission blocks is as illustratedin FIG. 12 . The six partial light-emission blocks located in the middleof the twenty partial light-emission blocks each have the combinedluminance that is the sum of luminance of the correspondingluminance-variable horizontal block 12 and luminance of thecorresponding luminance-variable vertical block 22. Those middle partiallight-emission blocks are subjected to the partial driving control bymeans of the corresponding luminance-variable horizontal blocks 12 andthe corresponding luminance-variable vertical blocks 22.

The two partial light-emission blocks in a left end region and the twopartial light-emission blocks in a right end region, both locatedsubstantially in the middle in the horizontal direction X, each have thecombined luminance that is the sum of luminance of the correspondingluminance-variable horizontal block 12 and luminance of thecorresponding luminance-fixed vertical block 21. Those partiallight-emission blocks located in the left end substantially-middleregion and the partial light-emission blocks located in the right endsubstantially-middle region are subjected to the partial driving controlby means of the corresponding luminance-variable horizontal blocks 12.

The three partial light-emission blocks in an upper end region and thethree partial light-emission blocks in a lower end region, both locatedsubstantially in the middle in the vertical direction Y, each have thecombined luminance that is the sum of luminance of the correspondingluminance-fixed horizontal block 11 and luminance of the correspondingluminance-variable vertical block 22. Those partial light-emissionblocks located in the upper end substantially-middle region and thepartial light-emission blocks located in the lower endsubstantially-middle region are subjected to the partial driving controlby means of the corresponding luminance-variable vertical blocks 22.

The partial light-emission blocks located at four corners each have thecombined luminance that is the sum of luminance of the correspondingluminance-fixed horizontal block 11 and luminance of the correspondingluminance-fixed vertical block 21. Those partial light-emission blockslocated at the four corners each have the constant luminancecontinuously without being subjected to the partial driving control. Itis to be noted that FIGS. 11 and 12 illustrate an example in which thelight-emission control is so performed that the luminance-fixedhorizontal blocks 11 and the luminance-fixed vertical blocks 21 eachhave an intermediate luminance. However, the luminance-fixed horizontalblocks 11 and the luminance-fixed vertical blocks 21 each may be set tohave any luminance other than the intermediate luminance.

Second Example

FIG. 13 illustrates a second example of the method of dividing thelight-emission region performed by the illumination unit according tothe present embodiment. FIG. 14 illustrates an outline of a secondexample of the partial driving control performed by the illuminationunit according to the present embodiment.

In the second example, the light-emission control is so performed thatthe luminance-fixed horizontal blocks 11 and the luminance-fixedvertical blocks 21 each have maximum luminance continuously. Otherwise,the second example is substantially similar to the foregoing firstexample.

Third Example

FIG. 15 illustrates a third example of the method of dividing thelight-emission region performed by the illumination unit according tothe present embodiment. FIG. 16 illustrates an outline of a thirdexample of the partial driving control performed by the illuminationunit according to the present embodiment.

Referring by way of example to the left side of FIG. 15 , at least thelight-emission blocks located at both ends in the vertical direction Yout of the horizontal blocks 10 according to the foregoing firstembodiment may serve as non-light-emission horizontal blocks 13. Thenon-light-emission horizontal blocks 13 each may have a configuration inwhich the light-emitting device 31 itself is not provided to be unlitcontinuously. In this case, the light-emission blocks other than thenon-light-emission horizontal blocks 13 out of the horizontal blocks 10serve as the luminance-variable horizontal blocks 12 to variably controlthe light-emission luminance of the luminance-variable horizontal blocks12.

Further, as illustrated by way of example on the right side of FIG. 15 ,at least the light-emission blocks located at both ends in thehorizontal direction X out of the vertical blocks 20 according to theforegoing first embodiment serve as the luminance-fixed vertical blocks21. In this case, the light-emission blocks other than theluminance-fixed vertical blocks 21 out of the vertical blocks 20 serveas the luminance-variable vertical blocks 22 to variably control thelight-emission luminance of the luminance-variable vertical blocks 22.

As with the foregoing first embodiment, a total of twenty partiallight-emission blocks are formed by combining the light-emission blocksillustrated in FIG. 15 . The luminance obtained as a result of thecombining in each of the partial light-emission blocks is as illustratedin FIG. 16 . The six partial light-emission blocks located in the middleof the twenty partial light-emission blocks each have the combinedluminance that is the sum of the luminance of the correspondingluminance-variable horizontal block 12 and the luminance of thecorresponding luminance-variable vertical block 22. Those middle partiallight-emission blocks are subjected to the partial driving control bymeans of the corresponding luminance-variable horizontal blocks 12 andthe corresponding luminance-variable vertical blocks 22.

The two partial light-emission blocks in a left end region and the twopartial light-emission blocks in a right end region, both locatedsubstantially in the middle in the horizontal direction X, each have thecombined luminance that is the sum of the luminance of the correspondingluminance-variable horizontal block 12 and the luminance of thecorresponding luminance-fixed vertical block 21. Those partiallight-emission blocks located in the left end substantially-middleregion and the partial light-emission blocks located in the right endsubstantially-middle region are subjected to the partial driving controlby means of the corresponding luminance-variable horizontal blocks 12.

The three partial light-emission blocks in an upper end region and thethree partial light-emission blocks in a lower end region, both locatedsubstantially in the middle in the vertical direction Y, each have thecombined luminance that is the sum of luminance of the correspondingnon-light-emission horizontal block 13 and the luminance of thecorresponding luminance-variable vertical block 22. Thus, the combinedluminance of each of those partial light-emission blocks is virtuallythe same as the luminance derived from the correspondingluminance-variable vertical block 22. Those partial light-emissionblocks located in the upper end substantially-middle region and thepartial light-emission blocks located in the lower endsubstantially-middle region are subjected to the partial driving controlby means of the corresponding luminance-variable vertical blocks 22.

The partial light-emission blocks located at four corners each have thecombined luminance that is the sum of the luminance of the correspondingnon-light-emission horizontal block 13 and the luminance of thecorresponding luminance-fixed vertical block 21. Thus, the combinedluminance of each of those partial light-emission blocks is virtuallythe same as the luminance derived from the corresponding luminance-fixedvertical block 21. Those partial light-emission blocks located at thefour corners each have the constant luminance continuously without beingsubjected to the partial driving control. It is to be noted that FIGS.15 and 16 illustrate an example in which the light-emission control isso performed that the luminance-fixed vertical blocks 21 each have themaximum luminance continuously. However, the luminance-fixed verticalblocks 21 each may be set to have any luminance other than the maximumluminance.

Fourth Example

FIG. 17 illustrates a fourth example of the method of dividing thelight-emission region performed by the illumination unit according tothe present embodiment. FIG. 18 illustrates an outline of a fourthexample of the partial driving control performed by the illuminationunit according to the present embodiment.

Referring by way of example to the left side of FIG. 17 , thelight-emission control may be so performed that the luminance of atleast the light-emission blocks, which serve as the luminance-fixedhorizontal blocks 11, located at both ends in the vertical direction Yout of the horizontal blocks 10 according to the foregoing firstembodiment becomes constant continuously. In this case, thelight-emission blocks other than the luminance-fixed horizontal blocks11 out of the horizontal blocks 10 serve as the luminance-variablehorizontal blocks 12 to variably control the light-emission luminance ofthe luminance-variable horizontal blocks 12.

Further, as illustrated by way of example on the right side of FIG. 18 ,at least the light-emission blocks located at both ends in thehorizontal direction X out of the vertical blocks 20 according to theforegoing first embodiment may serve as the non-light-emission verticalblocks 23. The non-light-emission vertical blocks 23 each may have aconfiguration in which the light-emitting device 32 itself is notprovided to be unlit continuously. In this case, the light-emissionblocks other than the non-light-emission vertical blocks 23 out of thevertical blocks 20 serve as the luminance-variable vertical blocks 22 tovariably control the light-emission luminance of the luminance-variablevertical blocks 22.

As with the foregoing first embodiment, a total of twenty partiallight-emission blocks are formed by combining the light-emission blocksillustrated in FIG. 17 . The luminance obtained as a result of thecombining in each of the partial light-emission blocks is as illustratedin FIG. 18 . The six partial light-emission blocks located in the middleof the twenty partial light-emission blocks each have the combinedluminance that is the sum of the luminance of the correspondingluminance-variable horizontal block 12 and the luminance of thecorresponding luminance-variable vertical block 22. Those middle partiallight-emission blocks are subjected to the partial driving control bymeans of the corresponding luminance-variable horizontal blocks 12 andthe corresponding luminance-variable vertical blocks 22.

The two partial light-emission blocks in a left end region and the twopartial light-emission blocks in a right end region, both locatedsubstantially in the middle in the horizontal direction X, each have thecombined luminance that is the sum of the luminance of the correspondingluminance-variable horizontal block 12 and the luminance of thecorresponding non-light-emission vertical block 23. Thus, the combinedluminance of each of those partial light-emission blocks is virtuallythe same as the luminance derived from the correspondingluminance-variable horizontal block 12. Those partial light-emissionblocks located in the left end substantially-middle region and thepartial light-emission blocks located in the right endsubstantially-middle region are subjected to the partial driving controlby means of the corresponding luminance-variable horizontal blocks 12.

The three partial light-emission blocks in an upper end region and thethree partial light-emission blocks in a lower end region, both locatedsubstantially in the middle in the vertical direction Y, each have thecombined luminance that is the sum of the luminance of the correspondingluminance-fixed horizontal block 11 and the luminance of thecorresponding luminance-variable vertical block 22. Those partiallight-emission blocks located in the upper end substantially-middleregion and the partial light-emission blocks located in the lower endsubstantially-middle region are subjected to the partial driving controlby means of the corresponding luminance-variable vertical blocks 22.

The partial light-emission blocks located at four corners each have thecombined luminance that is the sum of the luminance of the correspondingluminance-fixed horizontal block 11 and the luminance of thenon-light-emission vertical block 23. Thus, the combined luminance ofeach of those partial light-emission blocks is virtually the same as theluminance derived from the corresponding luminance-fixed horizontalblock 11. Those partial light-emission blocks located at the fourcorners each have the constant luminance continuously without beingsubjected to the partial driving control. It is to be noted that FIGS.17 and 18 illustrate an example in which the light-emission control isso performed that the luminance-fixed horizontal blocks 11 each have themaximum luminance continuously. However, the luminance-fixed horizontalblocks 11 each may be set to have any luminance other than the maximumluminance.

Any configuration, operation, and effect other than those describedabove may be substantially similar to those of the illumination unitaccording to the foregoing comparative example, or substantially similarto those of the illumination unit according to the foregoing firstembodiment.

3. Third Embodiment

A description is given next of an illumination unit according to a thirdembodiment of the present disclosure. It is to be noted that the same orequivalent elements as those of the illumination unit according to theforegoing first embodiment or the foregoing second embodiment aredenoted with the same reference numerals, and description thereof willbe omitted where appropriate.

FIG. 19 schematically illustrates an LED package 70 to be used for anillumination unit 1A according to a third embodiment of the presentdisclosure. FIG. 20 illustrates an equivalent circuit of the LED package70 illustrated in FIG. 19 .

The LED package 70 has a configuration in which at least one first LEDchip 71 and at least one second LED chip 72 are packaged into a singlepackage.

The first LED chip 71 and the second LED chip 72 are sealed on asubstrate 73 by a sealing member 80. For example, the first LED chip 71and the second LED chip 72 each may be a blue LED chip. The sealingmember 80 may be a transparent resin material, for example. The sealingmember 80 may contain a yellow phosphor that is dispersed therein andemits yellow light, for example. The LED package 70 may emit white lightobtained as a result of a combination of blue light derived from theblue LED chip and the yellow light derived from the yellow phosphor, forexample. The sealing member 80 may contain a diffusing agent that isdispersed therein and serves to diffuse light.

The first LED chip 71 is coupled to an anode 81 and a cathode 83. Afirst drive current IF1 flows between the anode 81 and the cathode 83.The second LED chip 72 is coupled to an anode 82 and a cathode 84. Asecond drive current IF2 flows between the anode 82 and the cathode 84.The second drive current IF2 is independent of the first drive currentIF1, allowing the first LED chip 71 and the second LED chip 72 to besubjected to the light-emission control independently.

FIG. 21 schematically illustrates the illumination unit 1A according tothe present embodiment in which the LED package 70 illustrated in FIG.19 is used.

At least one LED package 70 is disposed in each of the partiallight-emission blocks 101 formed by the partial overlapping of thehorizontal blocks 10 with the respective vertical blocks 20. In thiscase, configuring respectively the light-emitting device 31 and thelight-emitting device 32 illustrated in FIG. 8 by the first LED chip 71and the second LED chip 72 allows the light-emitting section 30 disposedper partial light-emission block 101 to be configured by at least oneLED package 70, thereby making it possible to achieve an illuminationunit equal to the illumination unit 1 according to the foregoing firstembodiment illustrated in FIG. 8 by, for example, the configuration ofthe illumination unit 1A illustrated in FIG. 21 .

FIG. 21 illustrates an example of the illumination unit 1A in which oneLED package 70 is disposed for one partial light-emission block 101. Theillumination unit 1A includes a plurality of LED substrates 74 extendingin the horizontal direction X. The LED substrates 74 each have theplurality of LED packages 70.

The first LED chips 71 provided in the respective LED packages 70adjacent to one another in the horizontal direction X are coupled to oneanother in each of the LED substrates 74. Thus, the plurality of firstLED chips 71 is arranged in one horizontal block 10.

Further, the second LED chips 72 provided in the respective LED packages70 adjacent to one another in the vertical direction Y are coupled toone another by a wiring line 75. Thus, the plurality of second LED chips72 is arranged in one vertical block 20.

Any configuration, operation, and effect other than those describedabove may be substantially similar to those of the illumination unitaccording to the foregoing comparative example, the foregoing firstembodiment, or the foregoing second embodiment.

4. Fourth Embodiment

A description is given next of an illumination unit according to afourth embodiment of the present disclosure. It is to be noted that thesame or equivalent elements as those of the illumination unit accordingto any of the foregoing first embodiment to the foregoing thirdembodiment are denoted with the same reference numerals, and descriptionthereof will be omitted where appropriate.

FIG. 22 schematically illustrates an illumination unit 1B according to afourth embodiment of the present disclosure. FIG. 23 schematicallyillustrates the horizontal blocks 10 in the illumination unit 1B. FIG.24 schematically illustrates the vertical blocks 20 in the illuminationunit 1B. FIG. 25 schematically illustrates the partial light-emissionblocks 101 formed by the illumination unit 1B. It is to be noted thatelements such as a wiring line that couples the mutually-adjacent LEDpackages 70 together are unillustrated in FIGS. 22 to 25 .

The illumination unit 1B has a configuration in which the plurality ofLED packages 70 is used as with the illumination unit 1A according tothe foregoing third embodiment. Upon using the LED packages 70, it ispreferable that the number of first LED chips 71 included in onehorizontal block 10 and the number of second LED chips 72 included inone vertical block 20 be the same as each other. In a case where thenumber of first LED chips 71 included in one horizontal block 10 and thenumber of second LED chips 72 included in one vertical block 20 aredifferent from each other, separate booster circuits may be necessary asillustrated in an example of a circuit configuration of FIG. 10 . Inother words, the booster circuit 60A directed to the horizontal blocks10 and the booster circuit 60B directed to the vertical blocks 20 may beprovided separately. Causing the number of first LED chips 71 includedin one horizontal block 10 and the number of second LED chips 72included in one vertical block 20 to be the same as each other allowsfor a configuration in which the booster circuit 60 that is shared bythe horizontal blocks 10 and the vertical blocks 20 is used asillustrated in an example of a circuit configuration of FIG. 9 .

FIG. 22 illustrates an example of a configuration in which ten LEDpackages 70 are disposed in the horizontal direction X and five LEDpackages 70 are disposed in the vertical direction Y. If the first LEDchips 71 provided in the ten LED packages 70 belonging to one row in thehorizontal direction X are assumed to form one horizontal block 10 andthe second LED chips 72 provided in the five LED packages 70 belongingto one column in the vertical direction Y are assumed to form onevertical block 20, the number of first LED chips 71 included in that onehorizontal block 10 and the number of second LED chips 72 included inthat one vertical block 20 are different from each other.

In this case, it is preferable that the second LED chips 72 provided inten LED packages 70 belonging to two columns in the vertical direction Yserve as one vertical block 20. This allows the number of first LEDchips 71 included in one horizontal block 10 and the number of secondLED chips 72 included in one vertical block 20 to be the same as eachother.

This configuration forms five horizontal blocks 10 (H0 to H4) and fivevertical blocks 20 (V0 to V4) in the illumination unit 1B. Those fivehorizontal blocks 10 (H0 to H4) and those five vertical blocks 20 (V0 toV4) partially overlap with one another respectively to form a total oftwenty-five partial light-emission blocks 101 as illustrated in FIG. 25. One partial light-emission block 101 includes two LED packages 70disposed therein. Thus, two first LED chips 71 and two second LED chips72 are disposed in one partial light-emission block 101.

Accordingly, the number of control devices 40 necessary is only ten inthe illumination unit 1B according to the present embodiment (namely,five control devices 40 in the horizontal direction X+four controldevices 40 in the vertical direction Y).

Similarly, the number of channels of the drive circuit 50 necessary isonly ten in the illumination unit 1B according to the present embodiment(namely, five channels for the horizontal blocks 10+five channels forthe vertical blocks 20). This means that, in a case where one drivecircuit 50 has a control function corresponding to six channels, forexample, providing two drive circuits 50 suffices in order to drive thefive horizontal blocks 10 and the five vertical blocks 20.

Any configuration, operation, and effect other than those describedabove may be substantially similar to those of the illumination unitaccording to the foregoing comparative example, or those of theillumination unit according to any of the foregoing first embodiment tothe foregoing third embodiment.

5. Fifth Embodiment

A description is given next of an application example of an illuminationunit according to a fifth embodiment of the present disclosure. It is tobe noted that the same or equivalent elements as those of theillumination unit according to any of the foregoing first embodiment tothe foregoing fourth embodiment are denoted with the same referencenumerals, and description thereof will be omitted where appropriate.

FIG. 26 schematically illustrates a display apparatus 301 according to afifth embodiment of the present disclosure. FIG. 27 illustrates anexample of an internal configuration of the display apparatus 301according to the present embodiment.

The display apparatus 301 may be a television apparatus, for example.Referring to FIG. 26 , the display apparatus 301 includes a displaysection 302 and a stand 303.

Referring by way of example to FIG. 27 , the display section 302includes a display panel 200, an illumination unit 201, and a pluralityof optical sheets disposed between the display panel 200 and theillumination unit 201. For example, the optical sheets may include adiffusion plate 202, a diffusion sheet 203, a prism sheet 204, and apolarization reflection sheet 205.

The display panel 200 may be a transmissive liquid crystal displaypanel, for example. The display panel 200 allows an image to bedisplayed on the basis of illumination light derived from theillumination unit 201 that serves as a backlight. The optical sheets maybe provided to uniformize a luminance distribution of the illuminationlight and increase use efficiency of the illumination light.

The illumination unit 201 includes a frame 211 and a reflection sheet212 provided on a surface of the frame 211.

The illumination unit 201 also includes a plurality of LED substrates213 disposed on the surface of the frame 211 with the reflection sheet212 interposed in between. The LED substrates 213 are each provided witha plurality of LED packages 214 and light source lenses 215 disposed onthe respective LED packages 214.

For the LED package 214, a configuration substantially similar to thatof the LED package 70 (FIG. 19 ) of the illumination unit according tothe foregoing third embodiment is applicable. One LED package 214includes at least two LED chips provided therein. At least one LED chipand at least one LED chip provided respectively in one LED package 214and another LED package 214 that are adjacent to each other on the sameLED substrate 213 are coupled to each other. Further, another at leastone LED chip and another at least one LED chip provided respectively inone LED package 214 and another LED package 214 that are adjacent toeach other in the same direction between the plurality of LED substrates213 are coupled to each other by a conduction line 216. Thisconfiguration allows for application, to the illumination unit 201, of amethod of a partial driving control that is substantially similar tothat of the illumination unit according to any of the foregoing firstembodiment to the foregoing fourth embodiment.

It is to be noted that the illumination unit according to the presentdisclosure is applicable to a display apparatus other than that used fora television. For example, it is possible to apply the illumination unitas a backlight of a display section of any of various monitors andmobile terminals. It is also possible to apply the illumination unitaccording to the present disclosure for illumination purpose other thanthe display apparatus purpose.

Any configuration, operation, and effect other than those describedabove may be substantially similar to those of the illumination unitaccording to the foregoing comparative example, or those of theillumination unit according to any of the foregoing first embodiment tothe foregoing fourth embodiment.

6. Other Embodiments

A technique according to the present disclosure may be variouslymodified for implementation without being limited to any of theembodiments described above.

For example, the foregoing third embodiment has been described byreferring to an example in which the light-emitting section 30 isconfigured by the LED package 70. However, unpackaged bare chip LEDs maybe used instead of the LED package 70.

For example, the present technology may also include the followingconfigurations.

(1) An illumination unit including:

-   -   a plurality of first light-emission blocks each including a        plurality of first light-emitting devices arranged in a first        direction;    -   a plurality of second light-emission blocks partially overlapped        with the respective first light-emission blocks, and each        including a plurality of second light-emitting devices arranged        in a second direction different from the first direction; and    -   a light-emission controller that performs light-emission control        of the first light-emitting devices for each of the first        light-emission blocks, and performs the light-emission control        of the second light-emitting devices for each of the second        light-emission blocks.

(2) The illumination unit according to (1), in which the firstlight-emission blocks and the second light-emission blocks areoverlapped with one another respectively to form a plurality of partiallight-emission blocks in the first direction and the second direction.

(3) The illumination unit according to (2), in which one or more of thefirst light-emitting devices and one or more of the secondlight-emitting devices are disposed in each of the partiallight-emission blocks.

(4) The illumination unit according to (3), in which the firstlight-emitting device and the second light-emitting device disposed inthe partial light-emission block are packaged into one package whilebeing allowed to be subjected to the light-emission controlindependently of each other.

(5) The illumination unit according to (3) or (4), in which

-   -   the first light-emitting devices include first LED chips,    -   the second light-emitting devices include second LED chips        subjected to the light-emission control independently of the        first LED chips, and    -   at least one LED package in which one or more of the first LED        chips and one or more of the second LED chips are packaged into        one package is disposed in each of the partial light-emission        blocks.

(6) The illumination unit according to any one of (3) to (5), in whichthe partial light-emission block has luminance that is sum oflight-emission luminance of the first light-emitting device disposed inthe partial light-emission block and light-emission luminance of thesecond light-emitting device disposed in the partial light-emissionblock.

(7) The illumination unit according to any one of (3) to (6), in whichthe light-emission controller

-   -   performs the light-emission control to allow light-emission        luminance of the first light-emitting device provided in some of        the first light-emission blocks of the plurality of first        light-emission blocks and light-emission luminance of the second        light-emitting device provided in some of the second        light-emission blocks of the plurality of second light-emission        blocks to be constant, and    -   variably controls light-emission luminance of the first        light-emitting device provided in the first light-emission        blocks other than the some of the first light-emission blocks        and light-emission luminance of the second light-emitting device        provided in the second light-emission blocks other than the some        of the second light-emission blocks.

(8) The illumination unit according to (7), in which the firstlight-emission blocks are provided side-by-side in the second direction,and include light-emission blocks located at least at both ends in thesecond direction of the first light-emission blocks, the light-emissionblocks serving as the some of the first light-emission blocks.

(9) The illumination unit according to (7) or (8), in which the secondlight-emission blocks are provided side-by-side in the first direction,and include light-emission blocks located at least at both ends in thefirst direction of the second light-emission blocks, the light-emissionblocks serving as the some of the second light-emission blocks.

(10) The illumination unit according to (7), further including, in placeof the some of the first light-emission blocks or the some of the secondlight-emission blocks, a plurality of non-light-emission blockspartially overlapped with the respective second light-emission blocks orthe respective first light-emission blocks,

-   -   in which the light-emission controller performs the        light-emission control to allow the light-emission luminance of        the first light-emitting device provided in the some of the        first light-emission blocks or the second light-emitting device        provided in the some of the second light-emission blocks to be        constant.

(11) A display apparatus including:

-   -   an illumination unit; and    -   a display panel that displays an image on a basis of        illumination light derived from the illumination unit,    -   the illumination unit including        -   a plurality of first light-emission blocks each including a            plurality of first light-emitting devices arranged in a            first direction,        -   a plurality of second light-emission blocks partially            overlapped with the respective first light-emission blocks,            and each including a plurality of second light-emitting            devices arranged in a second direction different from the            first direction, and        -   a light-emission controller that performs light-emission            control of the first light-emitting devices for each of the            first light-emission blocks, and performs the light-emission            control of the second light-emitting devices for each of the            second light-emission blocks.

It should be understood by those skilled in the art that variousmodifications, combinations, sub-combinations, and alterations may occurdepending on design requirements and other factors insofar as they arewithin the scope of the appended claims or the equivalents thereof.

1-11. (canceled)
 12. An illumination unit comprising: a plurality of first light-emission blocks each including a plurality of first light-emitting devices; a plurality of second light-emission blocks each including a plurality of second light-emitting devices; a light-emission controller that performs light-emission control of the first light-emitting devices for each of the first light-emission blocks, and performs light-emission control of the second light-emitting devices for each of the second light-emission blocks; a light-emitting section provided in each of the first light-emission blocks and each of the second light emission blocks; and wherein a light-emitting device package having a configuration in which at least one first light-emitting device and at least one second light-emitting device are packaged into one package, the number of the first light-emitting devices included in one first light-emission block and the number of second light-emitting devices included in one second light-emission block being the same as each other.
 13. The illumination unit according to claim 12, wherein a light-emission block has luminance that is a sum of light-emission luminance of the first light-emitting device disposed in the first light-emission block and light-emission luminance of the second light-emitting device disposed in the second light-emission block.
 14. The illumination unit according to claim 12, wherein the first light-emitting devices comprise first LED chips, the second light-emitting devices comprise second LED chips subjected to the light-emission control independently of the first LED chips, and at least one LED package in which one or more of the first LED chips and one or more of the second LED chips are packaged into one package is disposed in each of the light-emission blocks.
 15. The illumination unit according to claim 12, wherein each of the second light emission blocks receives a supply of a voltage through a booster circuit; the booster circuit being shared by the first light-emission blocks and the second light-emission blocks.
 16. The illumination unit according to claim 12, wherein at least one of the first light-emitting device and the second light-emitting device is a blue LED chip, and the sealing member is a transparent resin material.
 17. The illumination unit according to claim 12, wherein at least one of the first light-emitting device and the second light-emitting device is a blue LED chip, the phosphor is a yellow phosphor, and the LED package emits white light obtained as a result of a combination of blue light derived from the blue LED chip and yellow light derived from the yellow phosphor.
 18. The illumination unit according to claim 12, wherein the first light-emitting device and the second light-emitting device are sealed on a substrate by a sealing member.
 19. The illumination unit according to claim 18, wherein the sealing member contains a resin material and a phosphor.
 20. A display apparatus comprising: an illumination unit; and a display panel that displays an image on a basis of illumination light derived from the illumination unit, the illumination unit including a plurality of first light-emission blocks each including a plurality of first light-emitting devices; a plurality of second light-emission blocks each including a plurality of second light-emitting devices; a light-emission controller that performs light-emission control of the first light-emitting devices for each of the first light-emission blocks, and performs light-emission control of the second light-emitting devices for each of the second light-emission blocks; and a light-emitting section provided in each of the first light-emission blocks; and wherein a light-emitting device package having a configuration in which at least one first light-emitting device and at least one second light-emitting device are packaged into one package, the number of the first light-emitting devices included in one first light-emission block and the number of second light-emitting devices included in one second light-emission block being the same as each other; and the first light-emitting device and the second light-emitting device are sealed on a substrate by a sealing member, and the sealing member contains a resin material and a phosphor.
 21. The display apparatus according to claim 20, wherein a light-emission block has luminance that is a sum of light-emission luminance of the first light-emitting device disposed in the first light-emission block and light-emission luminance of the second light-emitting device disposed in the second light-emission block.
 22. The display apparatus according to claim 20, wherein the first light-emitting devices comprise first LED chips, the second light-emitting devices comprise second LED chips subjected to the light-emission control independently of the first LED chips, and at least one LED package in which one or more of the first LED chips and one or more of the second LED chips are packaged into one package is disposed in each of the light-emission blocks.
 23. The display apparatus according to claim 20, wherein each of the second light emission blocks receives a supply of a voltage through a booster circuit, the booster circuit being shared by the first light-emission blocks.
 24. The display apparatus according to claim 20, wherein at least one of the first light-emitting device and the second light-emitting device is a blue LED chip, and the sealing member is a transparent resin material.
 25. The display apparatus according to claim 20, wherein at least one of the first light-emitting device and the second light-emitting device is a blue LED chip, the phosphor is a yellow phosphor, and the LED package emits white light obtained as a result of a combination of blue light derived from the blue LED chip and yellow light derived from the yellow phosphor.
 26. A display apparatus comprising: an illumination unit; a reflection sheet over the illumination unit; optical sheets over the reflection sheet; and a display panel over the optical sheets that displays an image on a basis of illumination light derived from the illumination unit, the illumination unit including a plurality of first light-emission blocks each including a plurality of first light-emitting devices arranged in a first direction, and a plurality of second light-emission blocks partially overlapped with the respective first light-emission blocks, and each including a plurality of second light-emitting devices arranged in a second direction different from the first direction, wherein the first light-emission blocks and the second light-emission blocks are overlapped with one another respectively to form a plurality of partial light-emission blocks in the first direction and the second direction, one or more of the first light-emitting devices and one or more of the second light-emitting devices are disposed in each of the partial light-emission blocks, and the first light-emitting device and the second light-emitting device disposed in the partial light-emission block are packaged into one package while being allowed to be subjected to the light-emission control independently of each other, and wherein lenses are provided over each of the partial light-emission blocks.
 27. The display apparatus according to claim 26, wherein the first light-emitting device and the second light-emitting device are sealed on a substrate by a sealing member, and the sealing member contains a resin material and a phosphor.
 28. The display apparatus according to claim 27, wherein at least one of the first light-emitting device and the second light-emitting device is a blue LED chip and the phosphor is a yellow phosphor, and the LED package emits white light obtained as a result of a combination of blue light derived from the blue LED chip and the yellow light derived from the yellow phosphor.
 29. The display apparatus according to claim 26, wherein at least one of the first light-emitting device and the second light-emitting device is a blue LED chip, wherein a yellow phosphor covers the at least one of the first light-emitting device and the second light-emitting device, and wherein the partial light-emission blocks are LED packages that emit white light obtained as a result of a combination of blue light derived from the blue LED chip and the yellow light derived from the yellow phosphor.
 30. The display apparatus according to claim 26, further comprises a booster circuit that supplies voltage to the second light emission blocks.
 31. The display apparatus according to claim 26, further comprises a booster circuit that supplies voltage to the second light emission blocks, wherein the booster circuit is shared by the first light-emission blocks and the second light-emission blocks. 